中国人步行能耗以及步行锻炼建议  

Walking Energy Expenditure and Recommendation in Chinese Adults

作　　者：王欢[1] 江崇民[1] 刘欣[2] 何仲涛[3] 徐亮亮[2] 李纪江[3] 

机构地区：[1]国家体育总局体育科学研究所,北京100061 [2]上海体育科学研究所,上海200030 [3]四川省体育科学研究所,四川成都610041

出　　处：《体育科学》2013年第11期89-93,共5页China Sport Science

基　　金：国家科技支撑计划课题(2006BAK33B03)

摘　　要：目的:通过测量场地步行的能耗特征,以确定中度和大强度的身体活动(PA)的步频切点,并将身体活动指南转化成中国步行锻炼目标。方法:受试者226名(男117,女109),平均年龄21.7(±0.2)岁,自愿参加本研究。所有受试者完成4个6min的测试,测试速度从低到高依次是3.8km/h、4.8km/h、5.6km和6.4km/h。使用间接测热法测量不同速度下的能耗。采用Receiver operating characteristic(ROC)curves确定不同运动强度下的步频切点。结果:相同速度下,女性每分钟的步频高于男性。男性和女性之间的单位体重能耗(ml/kg/min)没有显著性差异。对应于中等强度(3 METs)和大强度(6 METs)的步频,男女数据一起分析时,分别是110步/min和130步/min。但分开分析时,男、女之间在切点上有细微的差别。结论:为了达到身体活动指南的要求,中国成年人应该有至少以110步/min的步频行走30min,或以相同的步频每天走3 300步,或步行2km。步行速度达到130步/min以上时,会提供额外的健康效益。Objective： The purpose of the study is to measure walking-related energy expenditure during field testing, to identify step-rate cut point associated with moderate and vigorous intensity, and to translate physical activity （PA） guidelines into walking goals for Chinese young a dults. Method： A sample of 226 Chinese adults （117 men, 109 women） with a mean age of 21.7 （ ± 0. 2 ） years, volunteered to participate in the study. All the participants completed four 6-minute incremental over ground walking at different speeds of 3.8km/h, 4.8 km/h, 5. 6 km and 6.4 kin/h, respectively. Indirect calorimeter was used to measure energy expenditure at each speed. Receiver operating characteristic （ROLE） curves were used to determine the steprate cut points associated with moderate and vigorous intensity activity. Results：At the same walking speed, step counts per minute were higher in women than in men. No significant differences were found in VO2 per weight（ml · kg-1 · min-1 ）between women and men. Steprate cut point associated with walking at 3METs and 6 METs were 110 step · min-1 and 130 step · min-1 when analyzing men and women together. There were slight differences on the cut points between women and men if data were analyzed separately. Conclusions ： In order to meet PA guidelines, Chinese young adult should walk 30 minutes with at least 110 step·min-1 , or 3,300 steps or 2 kilometers with the same step-rate per day. Walking at a higher speed of 130 step · min 1 might provide additional health benefit.

关 键 词：步行 能量消耗 步频 中国 

分 类 号：G804.49[文化科学—运动人体科学]